| 摘要 |
A valve element (27, 40) is movable in a main body for opening and closing the nozzle hole (23). A pressure control chamber (51) is formed at an end of the valve element (27, 40) and configured to receive high-pressure fuel to bias the valve element (27, 40) so as to close a nozzle hole (23). A first communication passage (52) communicates the pressure control chamber (51) with a low pressure side. An accommodating chamber (62) is located downstream of the first communication passage (52) and acommodates a valve member (70). A low-pressure opening (84) is for exhausting.fuel from the accommodating chamber (62). The valve member (70) has a valve portion (72) to control fuel flowing from the pressure control chamber (51) to the low pressure side. The accommodating chamber (62) and the low-pressure opening (84) therebetween has a passage, which defines a throttle portion (85).
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